Nay it was before that.
Like a lot of young French players, his attitude happened to him. He got cocky, didn't think he needed to be that serious in training anymore, I mean after all, the top European teams were after him when he was at Rennes, his last year and a half at Rennes was marred with controversy, unprofessionalism, and a lack of team ethic on M'Vila's part. He ended up going to Russia, and he was never the same player again.